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Current weather in San Luis Obispo is clear sky.

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This page shows hourly weather forecast for San Luis Obispo, including temperature, wind, precipitation, humidity and cloud cover.

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Weather data for San Luis Obispo is updated regularly with the latest available observations and forecasts.

Now · 3:59 PM

San Luis Obispo Weather & Hourly Forecast

United States · California · 93401

81°F

Sunny

Feels like: 83°F

💧 Humidity 56% 🌡 Pressure 29.88 inHg 💨 Wind 5 mph 👁 Visibility 19.5 mi ☁ Clouds 0% ☀️ UV index 4.1 · Moderate 🌅 Sunrise 6:51 AM 🌇 Sunset 6:57 PM

Hourly Forecast for San Luis Obispo

Today

4:00 PM

Sunny

78° 💧 None 💨 5 mph H 60%29.88 inHg

7:00 PM

Clear night

69° 💧 None 💨 1 mph H 85%29.91 inHg

10:00 PM

Mostly clear night

64° 💧 None 💨 2 mph H 95%29.91 inHg

Tomorrow

1:00 AM

Overcast night

63° 💧 None 💨 1 mph H 91%29.91 inHg

4:00 AM

Clear night

61° 💧 None 💨 2 mph H 86%29.91 inHg

7:00 AM

Overcast

60° 💧 None 💨 3 mph H 77%29.94 inHg

10:00 AM

Mostly cloudy

78° 💧 None 💨 3 mph H 31%29.94 inHg

1:00 PM

Sunny

86° 💧 None 💨 6 mph H 32%29.91 inHg

4:00 PM

Sunny

79° 💧 None 💨 7 mph H 49%29.88 inHg

7:00 PM

Clear night

68° 💧 None 💨 3 mph H 71%29.88 inHg

10:00 PM

Clear night

64° 💧 None 💨 2 mph H 72%29.91 inHg

Saturday

1:00 AM

Clear night

61° 💧 None 💨 2 mph H 64%29.88 inHg

4:00 AM

Mostly cloudy night

57° 💧 None 💨 3 mph H 73%29.85 inHg

7:00 AM

Partly cloudy

54° 💧 None 💨 3 mph H 82%29.88 inHg

10:00 AM

Mostly cloudy

74° 💧 None 💨 1 mph H 41%29.91 inHg

1:00 PM

Mostly sunny

78° 💧 None 💨 5 mph H 45%29.91 inHg

Today

4:00 PM

Sunny

78° 💧 None 💨 5 mph H 60%29.88 inHg

5:00 PM

Sunny

76° 💧 None 💨 3 mph H 66%29.88 inHg

6:00 PM

Sunny

73° 💧 None 💨 2 mph H 72%29.88 inHg

7:00 PM

Clear night

69° 💧 None 💨 1 mph H 85%29.91 inHg

8:00 PM

Clear night

66° 💧 None 💨 2 mph H 95%29.91 inHg

9:00 PM

Mostly clear night

65° 💧 None 💨 2 mph H 96%29.91 inHg

10:00 PM

Mostly clear night

64° 💧 None 💨 2 mph H 95%29.91 inHg

11:00 PM

Clear night

64° 💧 None 💨 1 mph H 94%29.91 inHg

Tomorrow

12:00 AM

Mostly cloudy night

63° 💧 None 💨 2 mph H 95%29.91 inHg

1:00 AM

Overcast night

63° 💧 None 💨 1 mph H 91%29.91 inHg

2:00 AM

Mostly cloudy night

62° 💧 None 💨 2 mph H 92%29.91 inHg

3:00 AM

Mostly cloudy night

62° 💧 None 💨 2 mph H 89%29.91 inHg

4:00 AM

Clear night

61° 💧 None 💨 2 mph H 86%29.91 inHg

5:00 AM

Partly cloudy night

60° 💧 None 💨 2 mph H 86%29.91 inHg

6:00 AM

Mostly cloudy night

60° 💧 None 💨 2 mph H 82%29.94 inHg

7:00 AM

Overcast

60° 💧 None 💨 3 mph H 77%29.94 inHg

8:00 AM

Mostly cloudy

63° 💧 None 💨 5 mph H 62%29.94 inHg

9:00 AM

Mostly cloudy

72° 💧 None 💨 4 mph H 41%29.94 inHg

10:00 AM

Mostly cloudy

78° 💧 None 💨 3 mph H 31%29.94 inHg

11:00 AM

Mostly cloudy

83° 💧 None 💨 4 mph H 26%29.94 inHg

12:00 PM

Mostly sunny

86° 💧 None 💨 5 mph H 26%29.94 inHg

1:00 PM

Sunny

86° 💧 None 💨 6 mph H 32%29.91 inHg

2:00 PM

Sunny

83° 💧 None 💨 8 mph H 41%29.91 inHg

3:00 PM

Sunny

81° 💧 None 💨 8 mph H 46%29.88 inHg

4:00 PM

Sunny

79° 💧 None 💨 7 mph H 49%29.88 inHg

5:00 PM

Sunny

77° 💧 None 💨 6 mph H 52%29.88 inHg

6:00 PM

Sunny

73° 💧 None 💨 4 mph H 59%29.85 inHg

7:00 PM

Clear night

68° 💧 None 💨 3 mph H 71%29.88 inHg

8:00 PM

Clear night

66° 💧 None 💨 1 mph H 76%29.88 inHg

9:00 PM

Clear night

65° 💧 None 💨 2 mph H 75%29.88 inHg

10:00 PM

Clear night

64° 💧 None 💨 2 mph H 72%29.91 inHg

11:00 PM

Clear night

63° 💧 None 💨 2 mph H 67%29.91 inHg

Saturday

12:00 AM

Clear night

62° 💧 None 💨 2 mph H 64%29.88 inHg

1:00 AM

Clear night

61° 💧 None 💨 2 mph H 64%29.88 inHg

2:00 AM

Clear night

60° 💧 None 💨 3 mph H 66%29.88 inHg

3:00 AM

Clear night

58° 💧 None 💨 3 mph H 70%29.88 inHg

4:00 AM

Mostly cloudy night

57° 💧 None 💨 3 mph H 73%29.85 inHg

5:00 AM

Mostly cloudy night

55° 💧 None 💨 3 mph H 76%29.88 inHg

6:00 AM

Overcast night

54° 💧 None 💨 3 mph H 79%29.88 inHg

7:00 AM

Partly cloudy

54° 💧 None 💨 3 mph H 82%29.88 inHg

8:00 AM

Mostly cloudy

58° 💧 None 💨 3 mph H 72%29.88 inHg

9:00 AM

Overcast

69° 💧 None 💨 1 mph H 50%29.91 inHg

10:00 AM

Mostly cloudy

74° 💧 None 💨 1 mph H 41%29.91 inHg

11:00 AM

Mostly cloudy

78° 💧 None 💨 3 mph H 40%29.91 inHg

12:00 PM

Mostly sunny

79° 💧 None 💨 5 mph H 43%29.91 inHg

1:00 PM

Mostly sunny

78° 💧 None 💨 5 mph H 45%29.91 inHg

2:00 PM

Mostly sunny

78° 💧 None 💨 5 mph H 44%29.88 inHg

3:00 PM

Sunny

77° 💧 None 💨 5 mph H 45%29.88 inHg

4:00 PM

Mostly sunny

75° 💧 None 💨 4 mph H 47%29.88 inHg

5:00 PM

Mostly sunny

72° 💧 None 💨 4 mph H 52%29.85 inHg

6:00 PM

Mostly cloudy

68° 💧 None 💨 3 mph H 62%29.88 inHg

7:00 PM

Overcast night

63° 💧 None 💨 3 mph H 76%29.88 inHg

8:00 PM

Mostly cloudy night

62° 💧 None 💨 2 mph H 83%29.88 inHg

9:00 PM

Overcast night

60° 💧 None 💨 1 mph H 91%29.91 inHg

10:00 PM

Mostly cloudy night

59° 💧 None 💨 0 mph H 95%29.91 inHg

11:00 PM

Mist at night

58° 💧 None 💨 1 mph H 96%29.91 inHg

Sunday

12:00 AM

Mist at night

57° 💧 None 💨 0 mph H 96%29.88 inHg

1:00 AM

Mist at night

56° 💧 None 💨 0 mph H 94%29.88 inHg

2:00 AM

Mist at night

56° 💧 None 💨 1 mph H 93%29.88 inHg

3:00 AM

Partly cloudy night

55° 💧 None 💨 1 mph H 91%29.88 inHg

4:00 AM

Partly cloudy night

54° 💧 None 💨 1 mph H 91%29.88 inHg

5:00 AM

Partly cloudy night

53° 💧 None 💨 1 mph H 90%29.88 inHg

In San Luis Obispo and, more broadly, across the state of California: Tonight, expect mostly cloudy skies with mild to warm temperatures ranging from 73 to 80 degrees Fahrenheit. Winds will be light, coming from the west at around 9 mph, with occasional gusts reaching up to 16 mph. No precipitation is forecast for the evening and the early night hours, so outdoor plans should be comfortable. Temperatures may gradually cool into the lower 70s later in the night, but overall, conditions will remain mild. The wind remains gentle, providing a slight breeze without causing concern. Overall, it should be a pleasant evening with no weather-related disruptions.

15-Day Weather Outlook for San Luis Obispo

TomorrowTomorrow

Mostly cloudy 86°/60° 💧 None 💨 8 mph

Saturday, Sep 26Sat Sep 26

Mostly cloudy 79°/54° 💧 None 💨 5 mph

Sunday, Sep 27Sun Sep 27

Partly cloudy 57°/53° 💧 None 💨 1 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in San Luis Obispo

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for San Luis Obispo

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 4:00 PM

PM2.5 Fine particles Good 9,8µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Fair 25,9µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 99,4µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,0µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in San Luis Obispo

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 4,6Moderate 🙂Fair

Tomorrow UV 4,6Moderate 🙂Fair

Saturday UV 4,5Moderate 🙂Fair

Sunday UV 0,0Low 😐Moderate

Hourly UV index today

4:00 PMUV 3,3 5:00 PMUV 2,2 6:00 PMUV 1,1 7:00 PMUV 0,3

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for San Luis Obispo

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SAN LUIS OBISPO, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

90/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 8:21 PM–5:28 AM

☁ Cloud cover 5% Real hourly forecast for the best viewing hour.

☾ Moonlight 98% Full Moon · Moon about 20° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 70° high at the best hour.

✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min43%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

Forecast data for San Luis Obispo were last refreshed today at 3:19 PM. The current forecast period extends through 26/09/2026 at 1:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.